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Noncontrolling Interests (Narrative) (Details) (CryoService Limited [Member]) In Millions, unless otherwise specified	1 Months Ended			3 Months Ended		12 Months Ended
	Nov. 30, 2011 USD ($)	Nov. 30, 2011 GBP (£)	Jun. 30, 2010	Dec. 31, 2011 USD ($)	Dec. 31, 2011 GBP (£)	Sep. 30, 2011
Noncontrolling Interest [Line Items]
Increased ownership interest percentage, from			72.00%
Increased ownership interest percentage, to			97.00%	100.00%	100.00%
Percentage ownership to be purchased				3.00%	3.00%	25.00%
Consideration of purchase obligations	$ 52.1	£ 33.2		$ 6.3	£ 4.0

Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

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